Pump assembly



Jan. 21, 1931. w. BLASKEWI'TZ 1 89,998

PUMP AS S EMBLY Filed Sept. 23, 1926 2 Sheets-Sheet, 1

INVENTOR.

fl/aakew/Tz A TTORNE Y.

Jan. 27, 1931. w. BLASKEWITZ PUMP ASSEMBLY Filed Sept. 23, 1926 2 Sheets-Sheet 2 I INVENTOR. W11. j/ akwl7z'.

A TTORNE Y.

Patented Jan. 27, 1931 UNITED STATES PATENT oFF-ICE,

wILLInnnLnsKEwITaoF nnrnorr, rcnrenn, AssIGNon; BY vrnsnn ASSIGNMENTS, .rooLAY'roN a; LAMBERT mnnorncrunmecomrnn or DETROIT,'MICHIGAN, A

CORPORATION or DELAWARE rum ASSEMBLY Applicatio'nfiled September 2S, 1926.

ceiving thecompressed fluid from the pump.

' The object of thepresent invention is the provision of a compactpump assembly adapted to forma part of a liquid fuel supply unit and adapted to supply the necessary pressure Within the container of the fuel supply unit whereby tocause positive feedingof the fuel within the container to the desired point. In addition to beingconveniently mounted on the container unit, the pumpassembly is con nected to the containerunit in a novel man- .ner whereby the fluid forced into the container by' the pump is not only maintained thereinbyanormal check, but which-compressed fluid forced within the container is positively sealed therein. fiIn other words, I have'provided a normal check for thepump assembly connection and'a' positive check for sealing 'anyfiuidthat might escape past the normal check member.

This-positive. sealing member preferably forms a-part of the pump assembly itself and also bears a 'certain connectingrelation with the connectlng means between the pump and container iwherebygitnotonlyg serves as a novel supporting-member but it is also very conveniently positioned-whereby it may be actuated at willto permitpumping, or to serve as: a positive checking means.

.In the drawings: Figili's a plan view showing-my novel pumpassembly and aircheck mounted on and .forming a part of a fuel supply unit.

*Fig. 2'-is a front-elevation of the structure shown in Fig. 1 and also-showingthe compact arrangement of;pump assembly'and fuel container'whereby the entire unit may be moved relative to a suitable opening.

"Fig. Sis an enlarged sectional view taken on lineI3-f3 of Fig.1. 1 p

Fig. 4 is a fragmentary sectional View taken-on line 44 of Fig. 3. p

Fig. 5;:is fan enlarged fragmentary detail -view;of the connection between the pump as- ,sembly and container andthe air checktherefor. 7

Serial No. 137,223.

My pump assembly is designed to be used primarilyin connection with liquid fuel containers, which containers form a part of, or are adapted to be connected with suitable liquid fuel burners or Vaporizers. Such container may be designated 1 and'as', shownin F 3, is provided with a suitable elbow connection 2. This elbow connection may be of anyform and shape desired, but in the illustrated elbow it is of standard right angular valve cage 4, adapted to receive a steelball 5 which serves asa check valve to prevent escape of-the fluid under pressure within the container.

The horizontal portion of the elbow '2, or the part extending outofjthe container, is provided withan inlet which is considerably enlarged relative. to thepassageway 3. This enlarged portion is connectedto the passageway by a'suitable tapered portion 6,. as best shown in Fig. 5. The extreme inlet-end of this horizontal portion of the elbow is drilled and tapped, as at 7, and the portion between the taper'6 and the threads? is drilled, as at 8.

The pump casing, or cylinder, may be designated 10, and such casing isprovided 71th a sultablepump bottom, or what may be termed a cyhnder head ll.

This cylinder head is cup-shaped to lit the end of the casing 10 and is provided with a suitable threaded extension 12 which is adapted to have screw tting relation with the threaded portion 7 ofthe elbow 2-. The forward end of'this pro jection 12 terminates in the tapered pin, 13 which is complementally formed with respect to the tapered seat 6. "The cylinder head, or cap 11, is provided with a passageway 1% which extends longitudinally of the threaded of this elbow 2,

portion 12, but which terminates and extends laterally back of thetapered portion '14, as clearly shown in Figs. 3 and 5; 1

The portion'8 of the elbow 2 is sufiiciently cut away whereby to form an annular chamber around the pin 13, whereby when the pin 13 is backed away from the tapered seat 6 the compressed air may be easily forced in and aroum the annular channel formed between the separated tapered portions 13 and 6. The lateral orifice of the passageway 14: is therefore always open and the tapered pin 1? may be forced against the tapered seat G with out in any way clogging or otherwise defacin such lateral port. It will be obvious that n the cap 11 is turned to advance the deal portion 12 and the pin that such ed pin 13 will be forced against the ed seat 6 to positively seal the passageand prevent the escape of any air which niq; it leak past cylinder head or cup 11 has a tight n the c but movable lat thereto. A er or 1 art turn of this cap 11 is all that is necessary open or close the positive seal and the arrangement of the threads 12 and T is sir'h that such quarter or half turn does not effect any appreciable movement of the cap 11.

The cylinder casing preferably rigidly mounted upon the container 1 by means of the member 15 which be suitably welded or otherwise secured to the casing 1; This member 15 originally supports and positions the casing 10 as well as the main part of the pump assembly. The other end of the cylinder casing is provided with a suitable cap 16 which also serves as a washer and guide for the piston structure 18' of any standard design.

Although my pump assembly may be used in connection with va ious types of fuel containers and in connection with various types of burners and stoves, it is preferably used in connection with cook stoves of the type wherein the fuel container and fuel unit are movable as a unit relative to the stove casing. In Fig. 1, I have illustrated a fragmentary portion of a stove casing, as at 20, and as shown in Fig. 2 such stove casing is provided with a suitable aperture or opening 21 in a wall thereof. The fuel container 1 is shown as being supported upon a suitable track member 22 which is secured to the opposite ends of the fuel container, and such track member 22 is adapted to be slidably supported by means of suitable guides 23 which form a part of, or are secured to the stove casing. A suitable generator tube 24 and valve 25 therefor is shown rigidly mounted on the fuel container tank 1, and it will be obvious that by means of the slidable supporting of the fuel tank 1 that the whole unit, including the tank 1, the pump assembly and the generator unit, may be moved into, or out of, the aperture 21, as desired, and without disconnecting the pump assembly or any parts of the fuel supply unit. A suitable pin 26 is provided on the container casing whereby the pump handle may be safely positioned when it is desired to move the fuel container in or out of the stove casing. This is merely a precautionary measure as the positive lock provided by the cap 11 prevents the handle from being forced outp wardly by any fluid pressure.

In operation of my novel pump assembly it is only necessary to turn the cylinder head or cap member 11 a quarter or half turn to back the pin 13 away from the valve seat 6. is the cap 11 is very handy this is a very simple operation. The operator is then free to actuate or reciprocate the piston rod 17 to force the air, or other fluid under pressure, into the container 1. Upon the last inward stroke of the piston rod 17 the operator will then turn the cap 11 back a quarter or half turn to advance the point 13 against the seat 6 whereby to positively seal the connection between the pump assembly and the containor. This positively prevents any rebound, or expelling action of the piston rod 17 which would otherwise be the case due to leakage of the air past the check valve. The positioning or securing of the pump casing 10 in the container by means of the member 15 assists in the arrangement and operation of the cap 11. This arrangement also permits the use of a relatively small pump assembly, and the positioning of the same upon a fuel container to make a neat, simple, compact unit which is always at the desired place when required, and which is conveniently positioned for operation. Y

lVhat I claim is:

1. In a pump assembly having a pump casing and a fluid pressure container, the combination of an air check connection serving as a mounting between a. pump casing and a fluid pressure container, means within the connection for automatically checking the flow of fluid from the container to the pump casing mounted onthe surface thereof, and means integral with a movable part of the pump casing for positively checking the flow of air from the container.

2. Afuel supply unit for cook stoves or similar structures comprising, a fuel tank and a pump assembly all mounted as a unit and slidable through an opening in the stove casing, a connectionfor mounting one end of the pump casing upon the tank, a passageway through the connection, a portion of the pump casing having an interfitting relation with said connection whereby relative movement between the two will positively seal said passageway to prevent movement of the pump rod, and means forming a part of the tank adapted to hold said pump rod in innermost position.

3. The combination of a fluid container having permanently mounted thereon a pump casing, said casing having a'rotatable closure at one end thereof, a check valve member permanently mounted on said container for connecting same with said pump and closure, said closure having an air valve and said member having an interfitting relation with said closure and a valve seat co operating with said valve whereby said closure is movable to positively control the passage of fluid between said pump and said container.

4. The combination of a pump valve assembly and a fluid pressure container, comprising a mump casing permanently mounted on said container and having an air discharge end cap, said cap having a ta ered air valve formed integral therewith, a c eck valve connection permanently mounted upon said container and in threaded engagement with said cap, said cap being rotatable and said connection having a valve seat cooperating with said valve whereby relative movement between said connection and said cap will cause seating of said valve and valve seat.

In testimony whereof I aifix my signature.

WILLIAM BLASKEWITZ. 

